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Finding the Fourth Proportional to 612,068.85, 857,782.13 and 612,068.85

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Solution

The fourth proportional to 612,068.85, 857,782.13 and 612,068.85 is: 857,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,068.85 : 857,782.13 = 612,068.85 : x
  2. Step 2: Convert to fraction form
    612,068.85/857,782.13 = 612,068.85/x
  3. Step 3: Cross multiply
    612,068.85x = 857,782.13 × 612,068.85
  4. Step 4: Simplify right side
    612,068.85x = 525,021,718,799.31
  5. Step 5: Solve for x
    x = 525,021,718,799.31/612,068.85
  6. Step 6: Final answer
    x = 857,782.13

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.